LDF4-50A Coaxial Cable LDF4-50A 1/2″ Corrugated Coaxial Cable – 20m – N Male to N Male LDF4-50A 1/2″ Corrugated Coaxial Cable – 30m – N Male to N Male LDF4-50A 1/2″ Corrugated Coaxial Cable – 40m – N Male to N Male LDF4-50A 1/2″ Corrugated Coaxial Cable – 50m – N Male to N Male